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- 51-1.02C Bonding Materials
- 51-1.02D Rapid Strength Concrete
- 51-1.02E Colored Concrete
- 51-1.02G Grout Grout must consist of portland cement and water, with a water content of at most 4 gallons per 94 pounds of cement. 51-1.02H Chemical Adhesives
- 51-1.02I Miscellaneous Metal
51-1.02 MATERIALS51-1.02A GeneralReserved 51-1.02B ConcreteExcept for minor structures, the cementitious material content per cubic yard of concrete in structures or portions of structures must comply with the content shown in the following table:
Except for minor structures, the minimum required 28-day compressive strength for concrete in structures or portions of structures is the compressive strength described or 3,600 psi, whichever is greater. 51-1.02C Bonding MaterialsBonding materials must be magnesium phosphate concrete, modified high-alumina-based concrete, or portland-cement-based concrete. Magnesium phosphate concrete must be either single component that is water activated or dual component with prepackaged liquid activator. Modified high-alumina-based concrete and portland-cement-based concrete must be water activated. Bonding materials must comply with the requirements shown in the following table:
Magnesium phosphate concrete must be formulated for a minimum initial set time of 15 minutes and minimum final set time of 25 minutes at 70 degrees F. Store the materials in a cool, dry environment before use. The mix water used with water-activated material must comply with section 90-1.02D. The quantity of water for single-component type or liquid activator for dual-component type to be blended with the dry component, must be within the limits recommended by the manufacturer and must be the least quantity required to produce a pourable batter. If authorized, you may add retarders to magnesium phosphate concrete. The addition of retarders must comply with the manufacturer's instructions. Magnesium phosphate concrete must not be mixed in containers or worked with tools containing zinc, cadmium, aluminum, or copper metals. Modified high alumina based concrete must not be mixed in containers or worked with tools containing aluminum.
RSC must have a minimum 28-day compressive strength of 4,000 psi except RSC placed in bridge decks must have a minimum 28-day compressive strength of 4,500 psi. 51-1.02E Colored ConcreteColor pigments for colored concrete must be iron oxides complying with ASTM C979/C979M. The dosage must not exceed 10 percent by weight of cementitious material in the concrete mix design. When test panels are specified, cementitious materials and aggregates from the same sources used in the authorized test panel must be used for the colored concrete in the completed work. 51-1.02F MortarMortar must be composed of cement, sand, and water. Materials for mortar must comply with section 90. The proportion of sand to cement measured by volume must be 2 to 1. Mortar must contain only enough water to allow placing and packing. Sand particles must be no larger than 1/2 the size of the recess or space in which the mortar is to be placed. 51-1.02G GroutGrout must consist of portland cement and water, with a water content of at most 4 gallons per 94 pounds of cement. 51-1.02H Chemical AdhesivesChemical adhesives for bonding dowels must be on the Authorized Material List for chemical adhesive/cartridge epoxies. The chemical adhesive must be appropriate for the installation conditions. 51-1.02I Miscellaneous MetalMaterials for access opening covers for new structures must comply with section 75-3. 51-1.02J Miscellaneous MaterialsPlastic pipe for deck bleeder drains must be schedule 40 PVC complying with ASTM D1785. Galvanized wire cloth for deck bleeder drains must be 1/4-inch mesh with 0.047-inch-diameter wire. Directory: esc esc -> Biblical Eschatology Presentation by: D. Paul Beck May 4, 2016 Ground Rules esc -> Mikael Håfstrӧm Screenplay by Miles Chapman and Arnell Jesko esc -> Escort affinity Program for Audi Club Members esc -> Preliminary entry form pistol esc -> Application form esc -> Request from Asian and Pacific Training Centre for Information and esc -> Constitution of the engineering student council university of maryland esc -> Subdisciplines of Earth Science Geology; study of the earth Download 6.74 Mb. Share with your friends:
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